Abraham hurwitz



A. HURWITZ.

SCARF PIN CLUTCH.

APPLICATION Fl LED JUNE 10. 19:9.

Patented Oct. 21, 1919.

W t I!!! a /m E/VTOB A TTOR/VEY UNITED STATES PATENT OFFICE.

ABRAHAM HURWITZ, OF NEW YORK, N. Y., ASSIGNOR TO LOUIS ROSENBERG, OF NEW YORK, N. Y.

SCARF-PIN' CLUTCH.

Specification of Letters Patent.

Patented Oct. 21, 1919.

Application filed. June 10, 1919. Serial No. 303,181.

To all whom it may concern:

Be it known that I, ABRAHAM HURWITZ, a citizen of the United States, and a resident of the borough of Manhattan, in the city, county, and State of New York, have invented a new and useful Scarf-Pin Clutch, of which the following is a specification.

The object of the invention is to provide an effective scarf-pin clutch of simple construction and capable of embodiment in small size. The device operates by virtue of a clutch-eye rotatable in a slide, biased in one direction by a spring, and having an arm cooperative with a fulcrum, so that longitudinal movement of the slide is accompanied by a slight turning movement of the eye. This in the direction urged by the spring causes the grips of the eye to seize the in against withdrawal, while pulling the slide in the opposite direction turns the eye so as to free the pin.

In the accompanying drawings forming a part hereof:

Figure l is an elevation of the clutch upon apin;

Fig. 2 is an enlarged elevation with the cover plate removed;

Fig. 3 is a central vertical section at right angles to the plane of Fig. 2;

Fig. 4 is a section, further enlarged, of the interior parts at right angles to the plane of Fig. 3;

Fig. 5 is a plan view of the eye; and

Fig. 6 is a side elevation of the pin tube a with the eye therein.

The clutch has a drum-shaped or flat, circular case 1, containing a diametrical pin passage having a funnel entrance 2 at the top. The lower part of the funnel entrance forms a tubular slide bearing 3. A pin tube 1 is slidably guided in this bearing and in a bearing opening in the bottom of the case, and at its lower end has a pull collar 5. The pin tube is made in two sect-ions with an intermediate bearing-box 6, having a circular transverse hearing.

In this box is journaled a clutch-eye 7 in the form of a ring having a pin passage formed by opposite openings 8 intersecting its central opening. These openings are sufficiently wide transversely to accommodate pins of various thicknesses with room for slight oscillatory movement of the eye, and

are beveled off to afford diagonally related gripping corners 9. A lateral arm 10 on the eye, passing through a slotted notch 11 in the edge of the box 6, fulcrums between a pair of pins 12 projecting from the. inner side of one of the face walls of the case. Thereby longitudinal movement of the slide compels rotary oscillatory movement of the clutch-eye about an axis at right angles to the longitudinal movement.

A spring 13 coiled about the lower part of the slide, between the box 6 and the bottom of the case, urges the slide and eye upward, thus canting the clutch-eye so that the grips press upon opposite sides of the pin, at diagonally spaced points. The effeet is that the pin can be moved downward in the clutch, but not upward unless the slide is pulled or held by grasping the collar 5 to relieve the pressure.

What I claim as new is:

1. A scarf-pin clutch, comprising in combination, a case having a pin passage, a slide in the case having a circular bearing, a clutch-eye rotatably mounted in said bearing to oscillate about an axis at right angles to the movement of the slide, a clutch-spring urging the slide in one direction, a releasebutton for operating the slide in the opposite direction, and fulcruming means causing the eye to turn as the result of longitudinal movement of the slide.

2. A scarf-pin clutch, comprising, in com- 7 bination, a case, a pin tube slidable therein and having a bearing-box in its intermediate portion, a circular clutch-eye rotatable in said box about an axis at right angles to the movement of the slide, a spring pressing the pin tube, an arm on the clutch-eye, and a fulcrum for said arm.

3. A scarf-pin clutch, comprising, in combination, a case, a slide in the case, a clutcheye carried by the slide and oscillatory about an axis at right angles to the longitudinal movement, said clutch-eye having a central opening and opposed pin gripping passages intersecting said opening, fulcrumin means for the clutch-eye, a clutch spring urging the slide in one direction, and a release-button for operating it in the opposite direction.

ABRAHAM HURWITZ.

Witness:

J ANS SwAR'rz.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, 

